Resource allocation in D2D-based V2V communication for maximizing the number of concurrent transmissions

Recently, device-to-device (D2D) communication has been considered as a promising technology to implement vehicle-to-vehicle (V2V) communication. To ensure road safety and traffic efficiency, V2V has more strict requirements for latency, reliability and access availability. In this paper, we consider the problem of resource block (RB) scheduling for maximizing the number of concurrent V2V transmissions instead of sum rate, allowing multiple vehicles to access to one RB. Firstly, the reliability requirement is transformed into a constraint of a matrix spectral radius to limit the accumulated interference. Secondly, utilizing spectral radius estimation theory, a Minimizing the Increment of Spectral Radius (MISR) resource block sharing algorithm is proposed to accommodate as many users as possible. Finally, simulation results show that the proposed MISR algorithm can improve spectrum efficiency by 150% and 96% in rush hour compared with some other existing methods.

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